Hoisting device



witnesses A. L. NYBLAD. HDISTIING DEVICE.

APPLICATION FILED JUNE 10. 1919.

' Patentd Jan. 13, 1920.

2 SHEETS-SHEET I.

A; L. NYBLAD.

HOISTING DEVICE.

AEEL'ICATION FILED JUNE 10. I919.

Patented Jan. 13, 1920.

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HOISTING DEVICE.

. hoisting ropes.

' which are spaced apart.

Another object is to so construct my invention that it will prevent theentanglement of the hoisting rope with the rope or ropes being raised.

Another object is to so make my improved hoisting device that it can beeasily connected and operated.

These objects, and other. advantageous ends which will be hereinafterdescribed, I attain in the following manner, reference being had to theaccompanying drawings in which Figure 1 is a side elevation showing myimproved hoisting device,

Fig. 2 is an end elevation looking in the direction of the right handside of Fig. 1

Fig. 3 is an end elevation looking in the direction of the left handside of Fig. 1 with the hoistingrope omitted,

Fig. 1 is a fragmentary side elevation showing certain of the parts in adifferent position from that shown in Fig.1,

Fig. 5 is a sectional elevation taken on the line 55 of Fig. 3, all ofthe rope being omitted,

Fig. 6 is a sectional plan view taken on the line 6-43 of Fig. 1, and

Fig. 7 is an elevation showing my invention in operative position whenbeing used to hoist a flag.

Referring to the drawings, 8 represents a supporting or block pulleywhich can be attached to any supporting structure and 9 represents acasing. The casing 9. as illustrated, is made of a piece of sheet metal.such, for example, as brass which is bent upon itself so as to providesides 10 and 11 The end 12 is provided with two openings 13 and 1 1through which project a portion of grooved or sheave pulleys 15 and 16respectively, the remaining portion of these pulleys being Specificationof Letters Patent. Patented Jan. 13, .1920. Application filed June 10,1919. Serial No. 303,130. I

positioned between the sides 10 and 11 ofthe casing9. The pulleys 15 and16 are freely rotatable on shafts 17 and 18 which are secured within thecasing sides 10 and 11. I

. A guard or guiding plate 19 is positioned between the sides 10 andllof the casing-9 and extends substantially upright and is positionedwithin the width of the casing, as clearly shown in Fig. 5. Thisprovides a channel 20 through which a hoisting rope. 21 is free to passand the combination of the pulleys 15 and 16 and guard-19 prevent thehoisting rope from becoming cut or entangled due to the relativemovement between said rope and the casing which will hereinafter bedescribed.

The upper and lower ends of the guard 19 are bent in the form of eyeletswhich surround rods 22 so that said guard plate is permanently heldwithin the casing and presents a smooth surface within its entire lengthand at its top and bottom to the hoisting rope.

Aametallic loop or yoke 28 is connected. between the sides 10 and 11 ofthe casing 9 by means of a bolt 24:. The upper closed end of the yoke23, the shape of which is clearly shown in Fig. 3, provides a bearingfor a shank 25 of an eyelet 26. The shank 25 isirotatably mounted withinthe yoke 23 so that it can turn in various positions to prevent thetwisting of the rope from affecting the posit-ion of the casing duringthe hoisting operation of the device. Fig. 4: shows the eyelet turned ata different angle from that which it is illustrated in Figs. 1,

3 and 5.

A bolt 27 has its opposite ends supported by the sides 10 and llof'thecasing 9 and i a link 28 has a hole 29 through which the bolt 27extends, said link being positioned so as to freely swing between thesides 10 Y and 11, as clearly shown in Figs. 1, 3 and 5.

The lower end .of the link 28 is splitat 30 to permit an attaching link31 .which, for example it willbeconsidered, is connected to theflag-bearing rope 32, to be coupled thereto. The attaching link 31, asillustrated, is also split asshown at 33 so that by bringing the splitportions of said links into register with each other, the link 31 can heslipped into coupling engagement with the link 28, as clearly shown. inFigs. 1.

and 3.

From the foregoing descrlption of the sides 10 and 11 are flared, asshown.

construction of my improved device, it will be understood that the guard19 forms a barrier between the yoke 23 and link 28 on one side of thecasing and the two pulleys 15 and 16 on the other side of the casing.Thus a free channel is provided for the hoisting rope 21 without chanceof interference or undue'friction upon the rope 21. The rope 21 passesover the block pulley 8 and is attached to the eyelet 26. Thus it willbe understood that by pulling the rope 21 that the casing and itsconnected parts will be raised and with it the flag-bearing rope 32which, as shown in Fig. 7, hasa flag 34 attached thereto.

It will be further understood that the guard 19 prevents the rope 21from engag ing the rope 32. Thus in pulling the rope 21, the tendency ofthe ropes will be to spread apart, as shown in Fig. 7, and thereby avoidthe possibility of entanglement of the ropes. All of the parts thus tendto keep the hoisting strand of the rope sepa rated from the strand whichis being raised. In addition, the fact that the eyelet 26 is pivoted,prevents any twisting of the hoisting rope from effecting or imparting atwisting movement to the casing or its connected parts, since, iftherope 21 is twisted, the eyelet 26 will rotate to take the twist out ofthe rope.

During the hoisting action, if the rope ll is pulled at such angle as tomove into on gagernent with the pulleys 15 and 16, these pulleys willserve as anti-friction means to permit a free movement of the rope.

' By providing the openings 13 and 1 1 in the casing 9, the size-of thecasing can be kept at a minimum by allowing a portion of the pulleys toproject, as shown in Figs. 1, 5 and 6, and access can be had to theshafts 17 and 18 f r oiling or cleaning purposes.

The upper and lower edges of the casing at 35. Thus the rope 21 can' bemoved sidewise without danger of the upper and lower edges of the casingfraying or shearing it.

While I have described my invention as taking a particular form, it willbe understood that the various parts of my invention may be changedwithout departing from the spirit thereof, and hence l'do not limit myself to the precise construction set forth, but consider that I am atliberty to make such changes and alterations as fairly come within the'scope of the appended claims.

Having thus described my invention, what I claim as new and desire tosecure by Let'- ters Patent is:

1. A device of the character described including a casing having twosides spaced apart; a guard located between said sides within the widthof said casing and together with one end and the sides of said casingproviding a channel through which a rope can pass; a yoke; a boltconnecting the ends of said yoke to the sides of. said casing at aposition between said guard and the opposite end of the casing; and aneyelet having its shank pivotally connected to the portion of said yokebetween its ends; substantially as described.

2. A device of the character described including a casing having twosides spaced apart; a guard located between said sides; an anti-frictionpulley positioned between said sides and in conjunction with said guardand casing sides providing at one side-of said guard a channel open atits top and bottom and through which a rope can pass; and rope couplingmeans connected to said casing at the opposite side of said channel andadjacent opposite ends thereoifisub stantially as described.

3. A. device of the character'described including a casing having twosides spaced apart; a guard located between said'sides; ananti-"friction pulley positioned between said sides and in conjunctionwith said guard and easing sides providing at one side of said guard achannel open at the top and bottom and through which a rope can pass anda pivotally mounted eyelet connectedto said casing at one side of thechannel and adjacent one end thereof; substantially as described.

4. A device of the character described in cluding a casing having twosides spaced apart; a guard located between said sides; an anti-fricti0npulley positioned between said sides and in conjunction with said guardand casin sides providing a channel through which a rope can pass; and apivotally mounted eyelet and link connected to said casing at one sideof the channel; sub stantially as described. i

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

AXEL L. NYBLAD.

lVitnesses:

R. A. F. DoRMcnY F. H. Don uoEY.

